This draft shows a portion of the Y chromosome tree in extension to Karafet et al. [1] and the ISOGG tree [2]

I have added the recently discovered SNP markers and I implemented the topology from our latest evaluation runs. Some positions on the tree are only verified by single samples. Additionally I have marked the uncertain assignments which are either work in progress or which cannot be tested by our laboratory due to missing control samples. More information on the SNP details can also be found at Ymap [3].

Note that because I'm frequently updating the tree you may need to refresh the web page to see the latest version. Most browsers cache the graphics from the first visit.

Working Draft of the Y Chromosome Tree Below R-M269 by Thomas Krahn is licensed under a Creative Commons Attribution-Noncommercial 3.0 Germany License.
Many thanks to all voluntary participants of the genealogical testing community for sharing their testing data from deCODEme and 23andMe chips and some of them providing control samples for my evaluation test runs. Special thanks also to David Reynolds who sketched out the first draft at DNA-Forums and helped me to refine the topology by cross checking all sources. This work wouldn't have been possible without the great spreadsheets from Ann Turner and Adriano Squecco who collected the SNP data and made them available to the public.